frog - English dictionary definition

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Frog An amphibious animal of the genus Rana and related genera, of many species. Frogs swim rapidly, and take long leaps on land. Many of the species utter loud notes in the springtime.
Frog The triangular prominence of the hoof, in the middle of the sole of the foot of the horse, and other animals; the fourchette.
Frog A supporting plate having raised ribs that form continuations of the rails, to guide the wheels where one track branches from another or crosses it.
Frog An oblong cloak button, covered with netted thread, and fastening into a loop instead of a button hole.
Frog The loop of the scabbard of a bayonet or sword.
Frog To ornament or fasten (a coat, etc.) with trogs. See Frog, n., 4.